Envelope visible even if not ticked "contactable" (Bugs)

Version 2.0 BETA 25
(Tried to read the change log if this bug has been fixed - couldn´t find it.
If it has been fixed - please ignore this message.)

For users that haven't ticked "E-mail address contactable", there is no envelope shown in the message header. Correct behavior.
But - if you click on "Open whole thread", the envelope is visible for all registrered users. Incorrect behavior - I would say.